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图片说明](https://img-ask.csdn.net/upload/201512/21/1450678593_204250.png)
想添加的数据放进: 里面,而不是外面。
private string filePath = string.Empty;
public void Addxml(string musicName, string musicLink)
{
filePath = Server.MapPath(@"playlist.xml");
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(filePath);
XmlNode xmldocSelect = xmlDoc.SelectSingleNode("trackList");
XmlElement xM = xmlDoc.CreateElement("track");
XmlElement mL = xmlDoc.CreateElement("location");
XmlElement mN = xmlDoc.CreateElement("title");
mL.InnerText = musicLink;
mN.InnerText = musicName;
xM.AppendChild(mL);
xM.AppendChild(mN);
xmlDoc.DocumentElement.AppendChild(xM);
xmlDoc.Save(filePath);
}